sunrpc: eliminate return pointer in svc_tcp_sendmsg()

Return a positive value if something was sent, or a negative error code.
Eliminate the "err" variable in the only caller as well.

Signed-off-by: Jeff Layton <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>

Author: jtlayton

net/sunrpc/svcsock.c

@@ -1224,7 +1224,7 @@ static int svc_tcp_recvfrom(struct svc_rqst *rqstp)
  * that the pages backing @xdr are unchanging.
  */
 static int svc_tcp_sendmsg(struct svc_sock *svsk, struct svc_rqst *rqstp,
-			   rpc_fraghdr marker, int *sentp)
+			   rpc_fraghdr marker)
 {
 	struct msghdr msg = {
 		.msg_flags	= MSG_SPLICE_PAGES,
@@ -1233,8 +1233,6 @@ static int svc_tcp_sendmsg(struct svc_sock *svsk, struct svc_rqst *rqstp,
 	void *buf;
 	int ret;
 
-	*sentp = 0;
-
 	/* The stream record marker is copied into a temporary page
 	 * fragment buffer so that it can be included in rq_bvec.
 	 */
@@ -1252,10 +1250,7 @@ static int svc_tcp_sendmsg(struct svc_sock *svsk, struct svc_rqst *rqstp,
 		      1 + count, sizeof(marker) + rqstp->rq_res.len);
 	ret = sock_sendmsg(svsk->sk_sock, &msg);
 	page_frag_free(buf);
-	if (ret < 0)
-		return ret;
-	*sentp += ret;
-	return 0;
+	return ret;
 }
 
 /**
@@ -1274,17 +1269,17 @@ static int svc_tcp_sendto(struct svc_rqst *rqstp)
 	struct xdr_buf *xdr = &rqstp->rq_res;
 	rpc_fraghdr marker = cpu_to_be32(RPC_LAST_STREAM_FRAGMENT |
 					 (u32)xdr->len);
-	int sent, err;
+	int sent;
 
 	svc_tcp_release_ctxt(xprt, rqstp->rq_xprt_ctxt);
 	rqstp->rq_xprt_ctxt = NULL;
 
 	mutex_lock(&xprt->xpt_mutex);
 	if (svc_xprt_is_dead(xprt))
 		goto out_notconn;
-	err = svc_tcp_sendmsg(svsk, rqstp, marker, &sent);
-	trace_svcsock_tcp_send(xprt, err < 0 ? (long)err : sent);
-	if (err < 0 || sent != (xdr->len + sizeof(marker)))
+	sent = svc_tcp_sendmsg(svsk, rqstp, marker);
+	trace_svcsock_tcp_send(xprt, sent);
+	if (sent < 0 || sent != (xdr->len + sizeof(marker)))
 		goto out_close;
 	mutex_unlock(&xprt->xpt_mutex);
 	return sent;
@@ -1295,8 +1290,8 @@ static int svc_tcp_sendto(struct svc_rqst *rqstp)
 out_close:
 	pr_notice("rpc-srv/tcp: %s: %s %d when sending %zu bytes - shutting down socket\n",
 		  xprt->xpt_server->sv_name,
-		  (err < 0) ? "got error" : "sent",
-		  (err < 0) ? err : sent, xdr->len + sizeof(marker));
+		  (sent < 0) ? "got error" : "sent",
+		  sent, xdr->len + sizeof(marker));
 	svc_xprt_deferred_close(xprt);
 	mutex_unlock(&xprt->xpt_mutex);
 	return -EAGAIN;